This topic explains how to use attribute filters to narrow experiment results by attribute.
Attribute filters allow you to analyze your experiment results by certain cross-sections of your experiment audience using context attributes.
For example, if you wanted to view only results from users within Canada, you might narrow your results by users with a “Country” attribute value of Canada.
To filter results by attribute, you can add attributes in the “Select metrics” step when you create an experiment. To learn how, read Creating experiments. You can then filter your results by the different values of one of those attributes.
You can also add attributes to an existing experiment from its Results tab. Here’s how:

You can add attributes to running experiment iterations created on or after September 30, 2025. You cannot add attributes to any running experiment iterations started before this date.
You can now filter your experiment results by these attributes.
To filter experiment results by attribute:
The graph updates to display results from only contexts with the attribute value you selected:

Private attributes and contexts with the anonymous property set to true are not available for data filtering. Private attributes and anonymous context attributes do not appear in the “Attribute filters” menus.
Configure your SDK: Context configuration